1489405 has 4 divisors (see below), whose sum is σ = 1787292. Its totient is φ = 1191520.

The previous prime is 1489403. The next prime is 1489409. The reversal of 1489405 is 5049841.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 329476 + 1159929 = 574^2 + 1077^2 .

It is not a de Polignac number, because 1489405 - 2¹ = 1489403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148936 + ... + 148945.

It is an arithmetic number, because the mean of its divisors is an integer number (446823).

2^1489405 is an apocalyptic number.

It is an amenable number.

1489405 is a deficient number, since it is larger than the sum of its proper divisors (297887).

1489405 is an equidigital number, since it uses as much as digits as its factorization.

1489405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297886.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1489405 is about 1220.4118157409. The cubic root of 1489405 is about 114.2012705827.

The spelling of 1489405 in words is "one million, four hundred eighty-nine thousand, four hundred five".